I echo the sentiments of Bolty and Spanner Turner.
What I would recommend is apply and take the apprenticeship if its offered(in lieu of any better offer) but don't stop looking for other options.
Your opportunities are very limited in QF (for the forseeable future anyway). This MAY change but don't hold your breath. If you get the job you should be prepared to ditch them if you find a better option (they won't hesitate to ditch you).
Personally, I have a had great training and opportunities at QF over the last 20 years but I took the option of leaving for precisly that reason. Limited future career prospects within Qantas.
PS its not too late to leave Bolty- I love not working nighshift and weekends anymore. If your out of work for longer than a few weeks I will be very surprised.